To get a song out of your head, try doing something like a puzzle or Sudoku.
13
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
It's impossible to kill yourself by holding your breath.
703
The Pittsburgh Steelers were originally called the Pirates.
50
Sunflowers can be used to clean up radioactive waste.
17
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
Only humans shed emotional tears.
331